/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.cmd;

import com.je.bpm.core.model.FlowElement;
import com.je.bpm.core.model.FlowNode;
import com.je.bpm.core.model.process.AdhocSubProcess;
import com.je.bpm.engine.ActivitiException;
import com.je.bpm.engine.ActivitiObjectNotFoundException;
import com.je.bpm.engine.impl.context.Context;
import com.je.bpm.engine.impl.interceptor.Command;
import com.je.bpm.engine.impl.interceptor.CommandContext;
import com.je.bpm.engine.impl.persistence.entity.ExecutionEntity;
import com.je.bpm.engine.runtime.Execution;

import java.io.Serializable;


public class ExecuteActivityForAdhocSubProcessCmd implements Command<Execution>, Serializable {

    private static final long serialVersionUID = 1L;
    protected String executionId;
    protected String activityId;

    public ExecuteActivityForAdhocSubProcessCmd(String executionId, String activityId) {
        this.executionId = executionId;
        this.activityId = activityId;
    }

    @Override
    public Execution execute(CommandContext commandContext) {
        ExecutionEntity execution = commandContext.getExecutionEntityManager().findById(executionId);
        if (execution == null) {
            throw new ActivitiObjectNotFoundException("No execution found for id '" + executionId + "'", ExecutionEntity.class);
        }

        if (!(execution.getCurrentFlowElement() instanceof AdhocSubProcess)) {
            throw new ActivitiException("The current flow element of the requested execution is not an ad-hoc sub process");
        }

        FlowNode foundNode = null;
        AdhocSubProcess adhocSubProcess = (AdhocSubProcess) execution.getCurrentFlowElement();

        // if sequential ordering, only one child execution can be active
        if (adhocSubProcess.hasSequentialOrdering()) {
            if (execution.getExecutions().size() > 0) {
                throw new ActivitiException("Sequential ad-hoc sub process already has an active execution");
            }
        }

        for (FlowElement flowElement : adhocSubProcess.getFlowElements()) {
            if (activityId.equals(flowElement.getId()) && flowElement instanceof FlowNode) {
                FlowNode flowNode = (FlowNode) flowElement;
                if (flowNode.getIncomingFlows().size() == 0) {
                    foundNode = flowNode;
                }
            }
        }

        if (foundNode == null) {
            throw new ActivitiException("The requested activity with id " + activityId + " can not be enabled");
        }

        ExecutionEntity activityExecution = Context.getCommandContext().getExecutionEntityManager().createChildExecution(execution);
        activityExecution.setCurrentFlowElement(foundNode);
        Context.getAgenda().planContinueProcessOperation(activityExecution);

        return activityExecution;
    }

}
